Sole-pressing machine



Nov. 6, 19:23. 1,472,346

C. D. KNOWLTON SOLE PRESS ING MACHINE Filed June 26 1919 3V"SheetS-Sheet 2 Figj Fig; 5

7 muy E?. NJ64 SQ/74 f 70 72 lMwss Inventor @25112. M43 /aw /fw Nov. 6 1923. 1,472,846

c. D. KNoWLToN SOLE PRESSING MACHINE Filed June 26 1919 3 Sheets-Sheet 5 ze Fig. 5 26 4o 44 fitness Inventor /m Q-/wf/ Patented Non, 5, i923.

Curran n. KNowLroN,v or aocKror-t'r, -ivrassaonosnrrrs AssrsNoa To oNirEn siren 1 `iaacnrNnnv coaronaT1oN,'on rarnasoN, New Jansma, A conroaarroNpr New JERSEY. y V- Application med Jane ae,

To aZZ whom t may con/cera: 1 Be it known that I, Correa D. KNOWL- 'roN, a citizen of the United States, residing at Rockport, in the county foi: Essexand 5 State of Massachusetts,haveinventedcertain new and useful Improvements in Sole Pressing Machines; and I doherebydeclare the following to be a full, clear, and enact description'ov the invention, such as will enable others skilled in the art to whichitappertains to make and use the same. i lThe present invention relates to sole pressing machines. and more particularlyto the type of solep'ressing machines :which are known in they art as sole laying machines.

.In sole laying machines as now commonly constructed a relativemovement of approach is imparted to the .jack and solepressing pad to bring the sole in contact with the shoe by means of a treadle actuated mechanism,

andthereafter a relative sole pressingmovement is imparted to the jack and sole pressing pad by power actuated mechanism thrown into operation by the operator.` rlheA treadle operated mechanism of these machines puts considerable work on ythe operator and also renders the machine somewhat slow inoperation. f A

.An object of the lpresent invention `is to produce a vsole laying machine which shall' be simple in construction and'eilicient in operation, and in which the operator will be relicif'ed of the work ofiimparting the relative movement of approach to the shoe supporting jack and solepre'ssing pad. A

With this object 'in view a teaturefof the present invention contemplatesthe provision Y in -a sole layingmachine of the'improved power operated mechanism'hereinafterv de-v scribed and claimed for imparting to they jack' and pad both relative movements of approach and sole pressing movements. Y

Other features of the invention consist in certain constructions, arrangements and combinations of parts Vhereinafter described and claimed, the advantages of which will be obvious to those skilled'in the art;

The invention will be readily understood from the 'following descriptionand accom'- panying drawings, in which y Figure l is a front elevation of a machine Y embodying the features of the inventionin theirpreferred form; Fig. 2`is alert end elevation ofthe machine; Figf is a detailed vertical sectional view, partly i'n elevation,

sornlrnnssiNe MACHINE.

1919. Serial No. 306,991.

-. of a controlling valve mechanismy'Figf 4 isYY a vertical sectional view, partly in elevation, .taken on the line 4 4 of F ig'.`2; and Fig. 5 is a horizontalsectional viewppartly in ele rThe present invention is illustrated in the Y,

drawings as embodied in Y a machine comprising twin presses'to lay the soles on righty .andleft shoes respectively,V constructed and arranged so that the sole of one shoe kis laid by one press while the work is being changed von the other press. I

VEach ofthe twinpresses vconfiprisesa shoe ysupporting'j ack 2 which is rigidlyv secured to Y `the upper ends yof a pair ofvertical supportl70 .ing rods 4 projecting from theupper endsV of side standards G. The lasted shoe is held by the supporting jack andthep'sole isv laid: by

a sole pressing pad S'mounted in a pad carrier'lO which is suitably securedto a crossv piecel slidably mounted on the. vertical rods 4. The parts above described are ysubstantially the sameasthe correspondingr parts of the sole laying machine illustrated No. 1,066,473, dated July 8, 1913.

and described in the patent to Davenport;

In the machine illustrated-in the draw-V` ings power actuated mechanism isl provided Ifor imparting rst a movement of approachto the pad carrier 10 soapsv to press the sole lightly against the shoe, and then a press! 1n the sole.

movement sufficient .to4 properlyy shape This mechanism comprises a fluid i operated piston and suitabley mechanical connections between the piston andthe pad' carrier which are constructed to act with increasing mechanical advantage during a oov uniform movement of the piston toiinpart=V Afirst a relatively tast movement of approach to the pad, and then a relatively slow pressing movementV By providing connections betweenth'e piston and the pad carrier operating in this manner an excessive' pressure for operating'the piston is rendered unnecessary anda comparatively rapid motion of the piston is permittedl without undue eX- penditure of the i'luid used `inv its operation, and without producing any objectionable shock or-jar whenthepad is brought into pressing position. Also a smooth running,

quick acting machine is produced in' which the pressing padl isquickly brought into pressing position, andl is then slowly and.

powerfully moved to exert the requisite pressure on the sole. The connections be tween the piston Vand pad carrier have provision for adjustment to vary the mechanical advantage thereof and lthereby vary the amount of pressure applied on the work. These connections comprise a. carrier 14 which in turn comprises a shaft 16 having reduc-ed end portions journaled in the upper ends of a vertically reciprocating yoke 18 by means of which the carrier is actuated. The shaft 16 is guided by means of guide rolls or trunnions 20 carried by the outer ends thereof, which engage the vertical walls of slots 21 in thestandards 6. During the vertical reciprocation of the shaft 16, a reciprocating rotary movement through substantially 180 degrees is imparted thereto by means of gears 22-22 which are secured to the shaft adjacent the inner ends of the bearings in the yoke 18, which gears operatively engage racks 24 secured to a web 26 connecting the standards 6. The sole pressing Vpad is connected to the shaft 16 by means of a link or connecting rod 30 having one endl pivotally connected to ears-32 projecting downwardly from the under side of the pad carrier 10 and its other end pivoted on a wrist pin 34 mounted in the'outer end of a block 36. The block 36 is mounted in a recess 38 in the shaft 16 and in effect constitutes a crank arm. Vhen the shaft 16 is at the limit of its down stroke, the wrist pin 34 is positioned so that its axis is to one side of the axis of the shaft 16 and in the same horizontal planev (Fig. 4) and during the up stroke of the shaft 16 the wrist pin is moved substantially 180 degrees about the axis of the shaft. It will be noted that with this construction, as the wrist pin approaches the deadcenter position of the connecting rody 30 and thew block ork crank arm 36, an initially rapid movement which de-Y creases in velocity will be imparted -to the sole pressing pad to position the pady in proximity to the, sole of the shoe supported by the jack and during the remainder yof the movement of the wristpin a comparatively slow but relatively powerful pressing movement will be applied to the sole through the ad. p In order to vary the pressure applied on the soleras desired, the block 3 6 is mounted to slide in the recess 38V and is adapted to be adjusted to move the wrist pin 34 toward and from the axis of the shaft by mea-ns of a nut'40 threaded on a stud 42 projecting from. the inner end ofthe block 36, the nut being held-.from longitudinal movement by engagement with the end walls of an aperture in a lug 44 projectingv from the shaft 16. The block 36 is held in adjusted position by means of a spring pressed plunger 46 mounted in the lug 44l which is adapted to engage a series of notches 48: providedin the periphery of thel nut.

The Huid operated mechanism hereinbefore refer-redto, for yieldingly actuating the carrier 14, comprises a piston 50 having aV piston rod 52 secured thereto, which at its upper end carries theY yoke 18..V The piston 50 is mounted in a cylinder 54 having a port 56 at its lower end.- The admission and discharge of compressed air or other fluid from the cylinder of both presses is controlled by a slide valve mechanism 58, the valve chamber of which is connected to the cylinders by pipesv 60 which lead from the ports in the cylinders to ports 62 in the valve casing 64. c

Compressed air is admitted into the valve chamber through a port 66 located in the casing 64 between the ports 62, which port 66 is connected to a source of compressedair supply. The valve isv connected by a link 68 .to an actuating leverY 70 centrally pivoted at 72. Foot treadles are formed at theends of the lever 70v which are conveniently located' in front of the respective presses.

The construction ofthe valve mechanism 58; is suchv that upon depression ofone ofthe treadles, compressed air is admittedy into the Ycylinder of its adjacent press, which through the piston raises the sole pressing pad as previously described. It is desirable, when one of the treadles is depressed', that it shall remain depressed to cause the pad of the adjacent press to continue to apply pressure to the sole until the workhas been changed on the other press, and the latter press is operated. To this end means are provided' for holding either. of the treadles, depressed until the other treadle is actuated to raise its associated pad. This means'coin- :prises an arm 74 centrally loc-ated and projecting upwfard'ly from the treadle lever 70. The free end of the arm 74 is provided' with notches 7 6 which are adapted alternatelyto engage a spring pressed plunger 77 to hold the lever 70 in the position to which it is Y moved by the' depressionV of eitherofv the treadles the full amount. When the valve1 mechanism 58 is actua-ted to open communication between the compressed air inlet port 66 andone ofthe ports 62, the other port ,62'

is opened to the atmosphere which permits, the air to be expelled from its associated cylinder, whereupon the pad connected with the piston in theJ cylinderl is'returned to its retracted position. It will be noted that with this construction, the operator by.- manipulation of the foot treadles may stop either pad at any point in its travel to per.- mit readjustment of the work.

In the operation of the illustrated machine, the amount of pressure applied on Va sole is determined' bythe adjustment of the wrist pin 34 in the-carrier-llf. As the sole pressing pads rise, the mechanical advantage of the uniform pressure of the fluid against the. piston 50 increases until aV point is reached wh'erethis pressure. just balances the pad pressure for which the machine has been set, when the movement of the piston' adjustable means is provided for limiting.

the uplstrokesof the pistonsO. This means comprises stops inv the form' of ca ps 7 8 threaded on the upper ends ofi the cylinders.

By screwing thecaps up or down the limits of the up strokes of the pistons may be varied as desired. i

This device might be used, for example, when the pin 34 was adjusted to be outside the pitch circle of the gears 22, in which case the pressure would diminish at the end of the stroke if the pin 34 were allowed to travel the full 180 degrees around the axis of the shaft 16.

A machine embodying the several features of the present invention in their preferred form having been specifically described, what is claimed is:

l. A sole pressing machine having, in combination, a shoe supporting jack, av sole pressing pad', mechanism acting with increasing leverage to move the jack and pad relatively to apply pressure to the sole of a shoe placed on the jack, and fluid operable means for actuating said mechanism.

2. A sole pressing machine having, in combination, a shoe supporting jack, a sole pressing pad, mechanism for moving theY jack and pad relatively to apply pressure to the sole of a shoe placed on the jack, means comprising a crank arm for adjusting said mechanism to vary the amount of pressure applied by the jack and pad, and fluid operable means for actuatingsaid mechanism.

3. A sole pressing machine having, inV

combination, a shoe supporting jack, a sole pressing pad, mechanism acting with increasing leverage to move the jack and pad relatively to apply pressure to the sole of a shoe placed on the jack, said mechanism having provision for adjustment to vary said leverage, and fluid operable means for actuating said mechanism'.

4. A sole pressing machine having. in combination, a shoe supporting jack, a sole pressing pad', mechanism for imparting a relative movement of approach to the jack and pad to position the pad and the sole of a shoe placed on the jack in proximity and then to impart a relative slow pressing movement to the jack and pad to apply pressure to the sole, means under the control of the operator throughout the duration of said movements of the jack and' pad for actuating` said mechanism, and means for adjusting said mechanism to vary the pressure applied by the jack and pad.

5'. A sole pressing machine having, in

combination, a shoe supporting jack, a sole pressing pad, mechanismfor imparting a relative movement of approach to'vthe jack and pad to positiony the pad and the sole of*v a shoe' placed on the jack vvin proximity, and thenv toimpart, a relative slow pressing pressure to the sole, means under the control of the operator during said relative pressing movement of the jack and pad 'for actuating saidl mechanism,- and means for adjusting said mechanism tol vary the pressure applied by the jack and pad.

6. A sole pressing machine having, in combination, a shoe supporting jack,fa sole pressing pad, mechanism acting with 'increasing leverage to' impart aV relative move-` ment of approach to the jack and pad to position the jack and pad in proximity and then to apply relatively a slow pressing movement to the jack and pad movement -to' thejack and pad to apply* sov to apply pressurey to the sole of a shoe i placed on the j ack, and fluid operable means for actuating said mechanism.

7. A sole pressing machine having, in combination, work engaging members comprising ashoe supporting jack and a sole pressing pad, a bodily movable crank arm, a link connecting the crank arm with one of said work eng-aging members`r means for sinuiltaneously imparting to the crank arm a rotary movement and a movement in a plane perpendicular to its axis to move the jack and pad relatively to apply pressure to the sole of a shoe placed on the jack, and means for adjusting the point of'connection the axis of the crank arm.

8. A sole pressing machine liaving, in combination, work engaging members comprisingv a shoe supporting jack and a sole pressing pad, andr mechanism acting with increasing leverage to move the jack and pad relatively toward each other comprising a carrier having a reciprocating rotary movement and a reciprocating movement in f a plane perpendicular to its axis, and a connection between said carrier and one of said work engaging members. said mechanismV having provision vfor adjustment between the carrier and the said one of the work 4of the crank arm and link toward and from i engaging members to vary the mechanical i having provision for adjustment to vary said leverage.

10. A sole, pressing machine having, in eombinatiom work engaging members Comprising a shoe supporting jack and a sole pressing pad, mechanism actingwith increasingleverage-to move the jack and pad relatively toward each other comprising a carrier having a reciprocating rotary movement and a reciprocating movement inV a plane perpendicular to its axis, and a connection between said carrier and one of said work `engaging; members, and means comprising a fluid actuated piston connected withl the Carrier for actuating saidmeehamsm.

1l. A sole pressing machine having, in" i applyv pressure to the sole of a shoe placed y on the jack, said mechanism comprising. a crank arm adjustable to 'vary the amount of pressure applied to the sole Without Vvarying the fluid pressure.

CTLER D. KN'oWLroN. 

